English to Russian Medical Medical: Cardiology

Essentially all left heart catheterizations from the femoral approach, however, are now performed using an appropriate-sized vascular sheath (e.g., a 6F sheath for a 6F catheter) that is equipped with a back-bleed valve and side-arm tubing as described above.The 15-cm-long sheath is commonly used for diagnostic catheterization, but can reach only the *midiliac*.In the presence of severe tortuosity or catheterization of obese patients, it may be preferable to use the 23-cm-long, or even 45-cm-long, sheath designed for interventional procedures, which is sufficiently long to enter the distal aorta above the bifurcation.